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  1. By: Haugen, David E. - Hansen, Mark H.
    Publication info: St. Paul, Minn, U.S. Dept. of Agriculture, Forest Service, North Central Research Station, 2002
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Haugen, David E. - Freeman, Phillip C. - Theisen, Mark A. - United States. Forest Service. - United States. Forest Service. North Central Research Station.
    Publication info: St. Paul, Minn. (1992 Folwell Ave., St. Paul 55108), U.S. Dept. of Agriculture, Forest Service, North Central Research Station, 1998
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Haugen, David E. - Ingram, Rosalie. - Ruppert, Forrest A. - North Central Forest Experiment Station (Saint Paul, Minn.)
    Publication info: St. Paul, Minn. (1992 Folwell Ave., St. Paul 55108), U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1997
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Haugen, David E. - United States. Forest Service. - United States. Forest Service. North Central Research Station.
    Publication info: St. Paul, Minn. (1992 Folwell Ave., St. Paul, 55108), North Central Research Station, Forest Service, U.S. Dept. of Agriculture, 2003
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  5. By: Haugen, David E. - Mielke, Manfred E. - United States. Forest Service. - United States. Forest Service. North Central Research Station.
    Publication info: Saint Paul, Minn, U.S. Department of Agriculture, Forest Service, North Central Research Station, 2002
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library